search

raspberrypi / pico-project-generator

Tool to automatically generate a Pico C SDK Project
BSD 3-Clause "New" or "Revised" License
304 stars 75 forks source link

Changing the default UART settings generates a broken cmake configuration. #102

Open Fluxward opened 12 months ago

Fluxward commented 12 months ago

Hi,

Here's what I've tried.

step 1 (control): Use the GUI to generate an empty project. The settings I used were: Board type = pico no library options console over UART no code options set build run after generation create vs code project picoprobe debug

This step created an empty project which successfully built, both after the project was generated and through manual testing.

step 2 (broken): The only things I changed were that I set: PICO_DEFAULT_UART = 1 PICO_DEFAULT_UART_RX_PIN = 27 PICO_DEFAULT_UART_TX_PIN = 26

Cmake runs without errors, but the subsequent make does not succeed.

lurch commented 8 months ago

Section 1.4.3. in https://datasheets.raspberrypi.com/rp2040/rp2040-datasheet.pdf shows that pin 26 is UART1 CTS and pin 27 is UART1 RTS, so these can't be used as TX and RX pins.